CN1794498A - Mixed type large crystal grain lithium cobaltate material for lithium battery and its preparation method - Google Patents
Mixed type large crystal grain lithium cobaltate material for lithium battery and its preparation method Download PDFInfo
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- CN1794498A CN1794498A CNA2005101311278A CN200510131127A CN1794498A CN 1794498 A CN1794498 A CN 1794498A CN A2005101311278 A CNA2005101311278 A CN A2005101311278A CN 200510131127 A CN200510131127 A CN 200510131127A CN 1794498 A CN1794498 A CN 1794498A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
This invention relates to a doped large grain lithium cobaltate positive material used in Li ionic batteries and its preparation method, which takes Co<SUB>3</SUB>O<SUB>4</SUB>, Li<SUB>2</SUB>Co<SUB>3</SUB> and MgO as the raw materials to be matched according to the following proportions: Co<SUB>3</SUB>O<SUB>4</SUB>: one proportion, Li<SUB>2</SUB>Co<SUB>3</SUB>: 0.45-0.6 and MgO: 0.004-0.1, the proportion relation is the ratio of actual mol number.
Description
Technical field
The present invention relates to a kind of lithium ion battery with big crystal grain lithium cobaltate cathode material of doping type and preparation method thereof, belong to the battery material technical field.
Background technology
Cobalt acid lithium material is because good, the long service life of its chemical property, and becomes the anode material for lithium-ion batteries of present extensive use.At present, the positive electrode of commercialization lithium ion battery employing is the less LiCoO of crystallite dimension
2What adopt in the preparation of cobalt acid lithium material usually is that stoichiometric proportion is Li: Co=1: 1, and the LiCoO for preparing
2Crystallite dimension is less, and the fail safe of the performance of material such as tap density, chemical property, battery etc. are all bad, thereby has influenced the overall performance of lithium ion battery.
Summary of the invention
Purpose of the present invention is exactly in order to overcome and to avoid the deficiencies in the prior art, and provides the good lithium ion battery of a kind of cheap, function admirable, fail safe with mixing the big crystal grain lithium cobaltate cathode material of type.Lithium cobaltate cathode material involved in the present invention should be big crystal grain, and the fail safe of the performance of this material such as tap density, chemical property, battery etc. all is better than traditional material property.
The present invention adopts following measure to realize its purpose.
A kind of lithium battery is with the big crystal grain cobalt of doping type acid lithium material, and this material is with Co
3O
4, Li
2CO
3, MgO is raw material, the prescription of described raw material is: Co
3O
4Be 1 part, Li
2CO
3Be that 0.45～0.6 part, MgO are 0.004～0.1 part, its proportionate relationship is the ratio of actual molal quantity.
A kind of lithium battery involved in the present invention is with the big crystal grain cobalt of doping type acid lithium material, and the prescription of its raw material can also be preferably: Co
3O
4Be 1 part, Li
2CO
3Be that 0.50～0.55 part, MgO are 0.05～0.1 part, its proportionate relationship is the ratio of actual molal quantity.
It is simple, low-cost that another object of the present invention provides a kind of technology, and the powder of preparation has the lithium ion battery preparation method who mixes the big crystal grain lithium cobaltate cathode material of type of high power capacity, high-tap density.
A kind of method for preparing lithium battery of the present invention with the big crystal grain cobalt acid of doping type lithium material, this method is carried out successively as follows:
(1), carries out weigh batching by the relation of the molar ratio described in the above-mentioned material prescription respectively.
(2), the powder of being prepared was carried out ball mill mixing more than 10 hours.
(3), the material that will mix was calcined in the air atmosphere of 350～900 ℃ of temperature 10～30 hours.
(4), the material after the above-mentioned calcining is pulverized and classification, promptly get the big crystal grain cobalt acid lithium powder that mixes.
In above-mentioned steps (3), calcine in the required air atmosphere and should add nitrogen.
Calcining heat is preferably 600～900 ℃ in above-mentioned steps (3).
Calcining heat the best is 800～900 ℃ in above-mentioned steps (3).
Utilize the big crystal grain cobalt acid of the doping type lithium powder of prescription of the present invention and preparation method preparation, its mean grain size is 6～8 μ m, and capacity is higher than 145mAh, have extended cycle life (＞500 times), and security performance is good.This preparation method technology is simple, low-cost, is applicable to suitability for industrialized production.
Embodiment
The present invention will be further described below in conjunction with embodiment
Embodiment 1
(1), takes by weighing powder raw material Li
2CO
3Be 34%wt, Co
3O
4Be 65%wt, MgO is that 1%wt prepares burden.
(2), the powder of being prepared was carried out ball mill mixing more than 10 hours.
(3), the material that will mix is at 900 ℃, calcining is 30 hours in the air atmosphere.
(4), the material after the above-mentioned calcining is pulverized, classification promptly gets the big crystal grain cobalt acid lithium powder that mixes
Embodiment 2
(1), takes by weighing powder raw material Li
2CO
3Be 34.5%wt, Co
3O
4Be 65%wt, MgO is that 0.5%wt prepares burden.
(2), the powder of being prepared was carried out ball mill mixing more than 20 hours.
(3), the material that will mix is at 850 ℃, calcining is 20 hours in the air atmosphere.
(4), the material after the above-mentioned calcining is pulverized, classification promptly gets the big crystal grain cobalt acid lithium powder that mixes
Embodiment 3
(1), takes by weighing powder raw material Li
2CO
3Be 34.25%wt, Co
3O
4Be 65%wt, MgO is that 0.25%wt prepares burden.
(2), the powder of being prepared was carried out ball mill mixing more than 10 hours.
(3), the material that will mix is at 800 ℃, calcining is 10 hours in the air atmosphere.
(4), the material after the above-mentioned calcining is pulverized, classification promptly gets the big crystal grain cobalt acid lithium powder that mixes
A kind of lithium ion battery doped carbon clad type nanometer LiFe involved in the present invention
1-xM
xPO
4/ C positive electrode and preparation method thereof, its more detailed technical scheme is: this material is with FeC
2H
4H
2O, Li
2CO
3, NH
4H
2PO
4, MgO, MnO
2With epoxide-resin glue be raw material, the prescription of described material is: FeC
2H
4H
2O:1, Li
2CO
3: 0.5, NH
4H
2PO
4: 1, MgO:0.05～0.1 or MnO
2: 0.05～0.1 its ratio unit is actual molal quantity, and preparation technology prepares burden, ball mill mixing, dries, sieves; Calcining in 350 ℃ and 600 ℃～800 ℃ nitrogen atmospheres, insulation respectively promptly gets doped carbon clad type nanometer LiFe again
1-xM
xPO
4/ C positive electrode.Utilize the doped carbon clad type nanometer LiFe of prescription of the present invention and preparation method preparation
1-xM
xPO
4/ C powder, mean grain size are that capacity is higher than 150mAh less than 100nm, and (＞2000 times) have extended cycle life.Preparation method's technology of the present invention is simple, low-cost, is applicable to suitability for industrialized production.
Claims (6)
1, a kind of lithium battery is with the big crystal grain cobalt of doping type acid lithium material, and this material is with Co
3O
4, Li
2CO
3, MgO is raw material, it is characterized in that the prescription of described raw material is: Co
3O
4Be 1 part, Li
2CO
3Be that 0.45～0.6 part, MgO are 0.004～0.1 part, its proportionate relationship is the ratio of actual molal quantity.
2, a kind of lithium battery according to claim 1 is characterized in that the prescription of described raw material is: Co with the big crystal grain cobalt acid of doping type lithium material
3O
4Be 1 part, Li
2CO
3Be that 0.50～0.55 part, MgO are 0.05～0.1 part, its proportionate relationship is the ratio of actual molal quantity.
3, a kind of method for preparing lithium battery as claimed in claim 1 or 2 with the big crystal grain cobalt of doping type acid lithium material is characterized in that this method carries out successively as follows:
(1), carries out weigh batching by claim 1 or 2 described molar ratio relations respectively.
(2), the powder of being prepared was carried out ball mill mixing more than 10 hours.
(3), the material that will mix was calcined in the air atmosphere of 350～900 ℃ of temperature 10～30 hours.
(4), the material after the above-mentioned calcining is pulverized and classification, promptly get the big crystal grain cobalt acid lithium powder that mixes.
4, a kind of lithium battery according to claim 3 is characterized in that should adding nitrogen in the required air atmosphere of the described calcining of step (3) with the preparation method of the big crystal grain cobalt acid of doping type lithium material.
5, according to claim 3 or 4 described a kind of lithium batteries preparation method, it is characterized in that in the described calcining heat of step (3) be 600～900 ℃ with the big crystal grain cobalt acid of doping type lithium material.
6, a kind of lithium battery according to claim 5 is characterized in that with the preparation method of the big crystal grain cobalt acid of doping type lithium material in the described calcining heat of step (3) be 800～900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101311278A CN1794498A (en) | 2005-12-23 | 2005-12-23 | Mixed type large crystal grain lithium cobaltate material for lithium battery and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101311278A CN1794498A (en) | 2005-12-23 | 2005-12-23 | Mixed type large crystal grain lithium cobaltate material for lithium battery and its preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1794498A true CN1794498A (en) | 2006-06-28 |
Family
ID=36805837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101311278A Pending CN1794498A (en) | 2005-12-23 | 2005-12-23 | Mixed type large crystal grain lithium cobaltate material for lithium battery and its preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181840A (en) * | 2011-06-22 | 2011-09-14 | 苏州晶纯新材料有限公司 | Lithium cobalt oxide target material and preparation method thereof |
| CN112909231A (en) * | 2021-01-19 | 2021-06-04 | 华东师范大学 | Doped coated composite modified lithium cobaltate LCMO @ BT and preparation method and application thereof |
-
2005
- 2005-12-23 CN CNA2005101311278A patent/CN1794498A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181840A (en) * | 2011-06-22 | 2011-09-14 | 苏州晶纯新材料有限公司 | Lithium cobalt oxide target material and preparation method thereof |
| CN102181840B (en) * | 2011-06-22 | 2012-08-08 | 苏州晶纯新材料有限公司 | Lithium cobalt oxide target material and preparation method thereof |
| CN112909231A (en) * | 2021-01-19 | 2021-06-04 | 华东师范大学 | Doped coated composite modified lithium cobaltate LCMO @ BT and preparation method and application thereof |
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Open date: 20060628 |